Information processing apparatus and clock control method

Abstract

An information processing apparatus, comprises a wireless communication unit, a frequency circuit which generates a plurality of frequencies that are not constant multiples to each other and serve as operation frequencies, a communication quality determination unit which determines whether a communication quality of the wireless communication unit has become lower than a predetermined level, and a selection unit which selects a frequency different from a current frequency from the plurality of frequencies generated by the frequency circuit when the communication quality determination unit determines that the communication quality has become lower than the predetermined level.

What is claimed is:  
     
         1 . An information processing apparatus, comprising: 
 a wireless communication unit;    a frequency circuit which generates a plurality of frequencies that are not constant multiples to each other and serve as operation frequencies;    a communication quality determination unit which determines whether a communication quality of the wireless communication unit has become lower than a predetermined level; and    a selection unit which selects a frequency different from a current frequency from the plurality of frequencies generated by said frequency circuit when said communication quality determination unit determines that the communication quality has become lower than the predetermined level.    
     
     
         2 . The apparatus according to  claim 1 , wherein 
 said frequency circuit includes a plurality of clock oscillators which generate the plurality of frequencies to operate at predetermined clocks, and    said selection unit selects the clock oscillator from the plurality of clock oscillators.    
     
     
         3 . An information processing apparatus, comprising: 
 a wireless communication unit:    a frequency circuit which generates a plurality of frequencies that are not constant multiples of each other and serve as operation frequencies;    a determination unit which determines whether a wireless communication execution request exists;    a frequency determination unit which determines a wireless frequency to be used for the wireless communication unit when said determination unit determines that the wireless communication execution request exists;    an interference determination unit which determines whether a current operation frequency interferes with the wireless frequency determined by said frequency determination unit; and    a selection unit which selects a frequency which does not cause interference from the plurality of frequencies generated by said frequency circuit when said interference determination unit determines that the current operation frequency interferes with the wireless frequency    
     
     
         4 . The apparatus according to  claim 3 , wherein 
 said frequency circuit includes a plurality of clock oscillators which generate the plurality of frequencies to operate at predetermined clocks, and    said selection unit selects the clock oscillator from the plurality of clock oscillators.    
     
     
         5 . A clock control method for an information processing apparatus which performs wireless communication, comprising: 
 communication quality determining whether communication quality in wireless communication has become lower than a predetermined level;    selecting a frequency different from a current frequency from a frequency circuit which generates a plurality of frequencies that are not constant multiples of each other and serve as operation frequencies of the apparatus when the communication quality is determined in the communication quality determining to have become lower than the predetermined level; and    operating the apparatus on the basis of the frequency selected in the selecting a frequency.    
     
     
         6 . A clock control method for an information processing apparatus which performs wireless communication, comprising: 
 determining whether a wireless communication execution request exists;    determining a wireless frequency used for wireless communication when presence of the wireless communication execution request is determined in the determining;    determining whether a current operation frequency of the apparatus interferes with the wireless frequency determined in the determining a wireless frequency; and    when the current operation frequency interferes with the wireless frequency, selecting a frequency of the clock which does not interfere with the wireless frequency determined in the determining a wireless frequency.